To provide an aluminum printing plate which permits activator processing and a platemaking method.

(1) The lithographic printing plate having physical development nuclei between an anodically oxidized aluminum support subjected to surface roughening and silver halide emulsion layers contains gelatin at ≤2 g/m2 and a polyhydroxy benzene developing agent at ≥1 millimolar per 1 g gelatin on the side having the silver halide emulsion layers. (2) The platemaking method for the lithographic printing plate comprises processing the lithographic printing plate by a developing solution substantially not containing the developing agent, then washing away the silver halide emulsion layers.